Convertible rowing machine

ABSTRACT

A rowing machine includes a handle having a first portion and a second portion that are selectively connectable. The rowing machine includes a flywheel driven by two separate cables. A first cable is connected to the first portion of the handle and a second cable is connected to the second portion. A spreader extends the width between the first portion and the second portion, allowing a user to perform kayak and canoeing exercises.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to and the benefit of U.S. Provisional Patent Application No. 63/188,728, filed on May 14, 2021, which is hereby incorporated by reference in its entirety.

BACKGROUND

Exercise is a common way for people to improve their fitness level and health. Many people prefer to exercise outdoors. However, many outdoor activities are not always convenient for a user to perform when the user is available. Exercise machines are used to allow a user to simulate an outdoor exercise activity indoors. Many users desire to perform an exercise activity from the comfort of their own home and may purchase an exercise device for their own use.

BRIEF SUMMARY

In some embodiments, a rowing machine includes a sliding seat, a flywheel, and two cables connected to the flywheel. A handle connected to the cables includes a first portion and a second portion. The first portion is connected to the first cable and the second portion is connected to the second cable. The rowing machine includes a footrest. The footrest includes a platform. A toe strap is connected to the platform. The footrest includes plurality heel catches. The plurality of heel catches is connected to the platform with a catch connection that biases each heel catch away from the platform.

This summary is provided to introduce a selection of concepts that are further described below in the detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to be used as an aid in limiting the scope of the claimed subject matter.

Additional features and advantages of embodiments of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of such embodiments. The features and advantages of such embodiments may be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features will become more fully apparent from the following description and appended claims, or may be learned by the practice of such embodiments as set forth hereinafter.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to describe the manner in which the above-recited and other features of the disclosure can be obtained, a more particular description will be rendered by reference to specific implementations thereof which are illustrated in the appended drawings. For better understanding, the like elements have been designated by like reference numbers throughout the various accompanying figures. While some of the drawings may be schematic or exaggerated representations of concepts, at least some of the drawings may be drawn to scale. Understanding that the drawings depict some example implementations, the implementations will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

FIG. 1 is a representation of a rowing machine, according to at least one embodiment of the present disclosure;

FIG. 2 is a representation of a top-down view of a rowing machine, according to at least one embodiment of the present disclosure;

FIG. 3-1 is a representation of a handle in a connected position, according to at least one embodiment of the present disclosure;

FIG. 3-2 is a representation of the handle of FIG. 3-1 in a separated position;

FIG. 4 is a representation of another handle in a separated position, according to at least one embodiment of the present disclosure;

FIG. 5-1 through FIG. 5-4 are representations of a footrest, according to at least one embodiment of the present disclosure; and

FIG. 6 is a representation of a method for securing a user's foot to a rowing machine, according to at least one embodiment of the present disclosure.

DETAILED DESCRIPTION

This disclosure generally relates to devices, systems, and methods for a rowing machine usable in a rowing, kayaking, canoeing, and other configurations. The rowing machine has a flywheel and two cables that each may independently apply a torque to the flywheel. The cables may be connected to a handle. The handle may include two portions. The two portions are connected to the two handles. The two portions may be connected to each other with a removable connection. When the two portions are connected, the rowing machine may be used in a rowing configuration. When the two portions are disconnected, each portion may pull on the flywheel independently. A spreader may be connected between the two portions to extend the length of the handle. In some embodiments, with the spreader in place, the user may be able to simulate a kayaking motion with the handle. In this manner, the rowing machine may be a convertible rowing machine that may be used in multiple configurations. This may increase the versatility of the rowing machine, thereby improving the user experience.

In some embodiments, the rowing machine may include a footrest against which the user may brace his or her feet during a rowing exercise. The footrest may include a platform. A toe strap may be located at a front end of the platform and a plurality of heel catches may be located at a rear end of the platform. During use, the user may insert his or her toes into the toe strap. The user's heel may depress one or more of the heel catches. As the user inserts his toes further into the toe strap, one or more of the depressed heel catches may move back away from the platform. This may move the heel catch above the user's heel. Contact between the user's heel and the heel catch may help to secure the user's foot to the footrest. This may provide the user with a more secure foot placement on the platform, thereby preventing the foot from moving during a rowing exercise.

FIG. 1 is a representation of a perspective view of a rowing machine 100, according to at least one embodiment of the present disclosure. The rowing machine 100 shown includes a sliding seat 102. During use, a user may sit on the sliding seat 102 and place his or her feet on footrests 104. The user may grab the handle 106 which is connected to a cable 108. The user may pull on the handle 106. This may pull on the cable 108, which may, in turn, rotate a flywheel 110. The flywheel 110 may provide resistance to rotation. As the user pulls on the handle 106, the user may push against the footrest 104 with his or her feet. As the cable 108 is extended, and while the user is pushing against the footrest 104 with his or her feet, the sliding seat 102 may slide backwards on a frame 112. The resistance to rotation of the flywheel 110 may be transferred to the cable 108, causing a force to be applied to the cable to rotate the flywheel 110.

The cable 108 may be biased to a retracted position, where the cable 108 is pulled within the rowing machine 100. When the user has finished pulling on the handle 106 (such as when the user's legs are extended, the sliding seat 102 is slid back on the frame 112, and/or the user has pulled his or her arms toward his or her chest), the user may move closer to the flywheel 110, and the cable 108 may be retracted. The motion may be repeated many times through a rowing exercise.

FIG. 2 is a schematic representation of a top-down view of a rowing machine 200, according to at least one embodiment of the present disclosure. The rowing machine 200 shown includes a flywheel 210 that is pulled by two cables (collectively 208). Each cable 208 may independently rotate the flywheel 210. Put another way, the user may rotate the flywheel 210 by pulling either the first cable 208-1 or the second cable 208-2. The cables 208-1 may be independent, meaning that a user may only pull on the first cable 208-1 during an exercise activity without pulling on the second cable 208-2, or vice versa.

The first cable 208-1 and the second cable 208-2 may be connected to a handle 206. In some embodiments, the first cable 208-1 may be connected to a first end 214-1 of the handle 206 and the second cable 208-2 may be connected to a second end 214-2 of the handle 206. During an exercise activity, the user may pull on the handle 206 to perform the exercise activity. For example, a user may perform a rowing motion by pulling on the handle 206 to extend the cables 208 evenly (e.g., extend the first cable 208-1 and the second cable 208-2 at the same time and at the same rate). During a rowing activity, as discussed herein, the user may sit on the sliding seat 102 and place his feet on the footrests. The user may pull on the handle 206 with his or her hands to extend the cables 208, thereby rotating the flywheel 210. In some embodiments, the sliding seat 102 may be connected to the frame 212 with a sliding connection, and the user may push against the footrests 204 with his or her legs to assist in pulling the handle 206.

In the embodiment shown, the handle 206 is a wide handle. For example, the handle 206 may have a width that is wider than the user's shoulder blades. This may allow the user to exercise different muscles during a rowing exercise activity. For example, the user may place his or her hands at different widths apart on the handle 206 to exercise different muscles.

In some embodiments, the handle 206 may be a modular handle or an adjustable handle. The handle 206 may include a first portion 216-1 and a second portion 216-2. The first cable 208-1 may be connected to the first portion 216-1 and the second cable 208-2 may be connected to the second portion 216-2. The first portion 216-1 and the second portion 216-2 may be selectively couplable or connectable to each other. As may be seen in FIG. 3-1, the first portion 216-1 may be directly coupled or connected to the second portion 216-2. In some embodiments, a handle accessory 218 may be connected to one or both of the first portion 216-1 or the second portion 216-2. In the embodiment shown in FIG. 2, the handle accessory 218 may be a spreader. The spreader may be placed between the first portion 216-1 and the second portion 216-2 to extend the width of the handle 206. This may allow the user to exercise different muscles by placing his or her hands at different locations on the handle 206.

In some embodiments, a spreader handle accessory 218 may be used to spread the handle 206 to simulate a kayak paddle. A kayak paddle may be wider than a rower handle 206 to simulate the action of paddling a kayak. A kayak paddle used on the water includes a shaft that supports a blade on either end. To propel the kayak forward, the user may lower one end of the shaft and raise the other end of the shaft to place the blade in the water at a position in front of the user. The user may draw the blade toward him or herself and pull the blade out of the water. The user may then lower the second blade while raising the first blade to engage the second blade in the water and pull back on the second blade. This action is then repeated indefinitely.

The kayak paddling motion may be simulated using the handle 206 shown in FIG. 2. For example, the user may hold the handle 206 and lower the first portion 216-1 down while raising the second portion 216-2. The user may then pull back (e.g., away from the flywheel 210, toward the sliding seat 102) on the first portion 216-1. This motion may extend the first cable 208-1 without extending the second cable 208-2, or while retracting the second cable 208-2. The user may then raise the first portion 216-1 while lowering the second portion 216-2. The user may then pull back (e.g., away from the flywheel 210, toward the sliding seat 102) on the second portion 216-2. This motion may extend the second cable 208-2 without extending the first cable 208-1, or while retracting the first cable 208-1. In this manner, the user may simulate the motion and/or forces experienced while paddling on a kayak using a kayak paddle.

While paddling, the user on a kayak may stay in the same position relative to the body of a kayak. Put another way, the seat of a kayak may be stationary, or not move. In some embodiments, in the kayaking configuration discussed herein, the sliding seat 102 may include a locking mechanism or a seat catch. The seat catch may lock the sliding seat 102 in place such that the seat does not slide along the frame 212. Using a seat catch may help keep the user stable and further simulate the kayak paddling motion, thereby improving the user experience.

In some embodiments, the handle accessory 218 may be a paddle shaft and grip, such as a canoe or dragon boat paddle shaft and grip, or other similar paddle shaft and grip. A canoe paddle has a single blade that extends into the water and a cross-bar at the top for the user to grab the handle. Only a single paddle extends into the water. To simulate the canoe paddling motion, the handle accessory 218 may only be connected to the first portion 216-1. The user may grip the handle accessory 218 vertically or approximately vertically and perform a canoe paddling motion with then handle by pushing the first portion 216-1 downward and pulling the first portion 216-1 backward. Because the handle 206 may only be connected to the first cable 208-1, this motion may only extend the first cable. As may be understood, the accessory may similarly be connected to the second cable 208-2 and the canoeing paddling motion simulated by extending the second cable 208-2. A modular or configurable handle 206 that can be converted between the rowing configuration, the kayaking configuration, and the canoeing configuration may increase the number of exercises that may be performed on the rowing machine 200, thereby increasing its versatility. More available exercises may reduce the number of exercise devices a user may utilize to perform these exercises, thereby improving the user experience.

FIG. 3-1 is a representation of a handle 306 in a connected position, according to at least one embodiment of the present disclosure. The handle 306 includes a first portion 316-1 connected to a second portion 316-2 at a handle connection 320. As discussed herein, the first portion 316-1 and the second portion 316-2 may be selectable connected at the handle connection 320. Thus, the first portion 316-1 may be separated from the second portion 316-2 and connected again, depending on the exercise being performed, a handle accessory (e.g., the handle accessory 218 of FIG. 2) to be integrated with the handle 306, any other connection reason, and combinations thereof.

The first portion 316-1 includes a first handle 322-1. A first connection arm 324-1 may be connected to the first handle 322-1. A cable (e.g., the first cable 208-1 of FIG. 2) may be connected to the first portion 316-1 at the first connection arm 324-1. The second portion 316-2 includes a second handle 322-2. A second connection arm 324-2 may be connected to the second handle 322-2. A cable (e.g., the second cable 208-2 of FIG. 2) may be connected to the second portion 316-2 at the second connection arm 324-2. While the connection arms (collectively 324) are shown as being connected to the handle (collectively 322) and extending out of the handle 322, it should be understood that the cables may be directly connected to the handle 322.

The first portion 316-1 may be separated from the second portion 316-2 at the handle connection 320, as may be seen in FIG. 3-2. In FIG. 3-2, the first portion 316-1 has been separated from the second portion 316-2 at the handle connection 320. In the embodiment shown, the handle connection 320 is an interlocking connection, such as a dovetail connection. The first portion 316-1 includes a protrusion 326 having at least one overhanging portion. The second portion 316-2 includes a recessed portion 328 including at least one complementary overhanging portion. When the protrusion 326 is inserted into the recessed portion 328, the protrusion 326 and the recessed portion 328 may interlock. Interlocking of the protrusion 326 and the recessed portion 328 may prevent separation of the first portion 316-1 from the second portion 316-2. In some embodiments, the interlocking connection between the protrusion 326 and the recessed portion 328 may help to prevent longitudinal removal, or removal that is parallel to a longitudinal axis of the handles (collectively 322).

In the embodiment shown, the handle connection 320 includes a pin and detent to prevent movement of the first portion 316-1 relative to the second portion 316-2 along the insertion axis of the protrusion 326 into the recessed portion 328. For example, the protrusion 326 may include a detent 330, or a recessed portion. The recessed portion 328 may include a pin 332. The pin 332 may be configured to be inserted into the detent 330. In some embodiments, the pin 332 may be biased outward with a spring or other resilient element. When the protrusion 326 is inserted into the recessed portion 328, the protrusion 326 may engage the pin 332. When the first portion 316-1 is fully connected to the second portion 316-2, the pin 332 may be inserted into the detent 330. The pin 332 may resist being removed from the detent 330. This may help to strengthen the handle connection 320, thereby preventing separation of the first portion 316-1 relative to the second portion 316-2.

FIG. 4 is a representation of a handle 406 having a magnetic handle connection 420, according to at least one embodiment of the present disclosure. The magnetic handle connection 420 may include a protruding magnet 434 on a first portion 416-1 of the handle 406 and a recessed magnet 436 on a second portion 416-2 of the handle 406. The protruding magnet 434 and the recessed magnet 436 may have a complementary shape. When connecting the first portion 416-1 to the second portion 416-2, the protruding magnet 434 may be magnetically connected to the recessed magnet 436. The magnetic connection may pull the first portion 416-1 to the second portion 416-2 and retain the two portions together.

In some embodiments, the magnetic handle connection 420 may include one or more alignment features. The alignment features may help to align the first portion 416-1 relative to the second portion 416-2. In some embodiments, the complementary shapes of the protruding magnet 434 and the recessed magnet 436 may be complementary. For example, the protruding magnet 434 shown has an arcuate shape and the recessed magnet 436 has a complementary arcuate shape with similar dimensions and shape. When the protruding magnet 434 is inserted into the recessed magnet 436, the complementary shapes may orient and align the first portion 416-1 with respect to the second portion 416-2. This may help to maintain an alignment of a first connection arm 424-1 with respect to a second connection arm 424-2. Alignment between the first connection arm 424-1 and the second connection arm 424-2, may help to maintain a constant pressure on the first portion 416-1 and the second portion 416-2 while pulling on the cables (e.g., cables 208 of FIG. 2) of the rowing machine.

FIG. 5-1 is a representation of a footrest 504 for a rowing machine, according to at least one embodiment of the present disclosure. The footrest 504 includes a platform 538. A toe strap 540 is connected to the platform 538 at a front end 541 of the platform 538. The footrest 504 further includes a plurality of heel catches 542. In some embodiments, the plurality of heel catches 542 may be arranged longitudinally along a length of the platform 538. For example, the heel catches 542 shown are arranged in a line between a rear end 543 of the platform 538 and the toe strap 540. To use the footrest 504, the user may slide his or her foot, and more particularly his or her toes, into the toe strap 540. To insert his or her toes into the toe strap 540, the user may slide his or her toes between the platform 538 and the toe strap 540. The toe strap 540 may help to keep the user's foot, and particularly the user's toes, connected to the platform 538.

In some embodiments, the toe strap 540 may be a one-size-fits-all toe strap. In some embodiments, the toe strap 540 may be adjustable. For example, the toe strap 540 may include a tightening mechanism, such as a latch, hook and eye straps, buttons, cables, knobs, any other tightening mechanism, and combinations thereof. In some embodiments, the toe strap 540 may be formed from an elastic material and may push against the user's foot. In some embodiments, the toe strap 540 may be connected to an electric motor, and the electric motor may tighten the toe strap 540.

The heel catches 542 may be secured to the platform 538 and biased above the platform 538. The heel catches 542 may be connected to the platform 538 at a catch connector (collectively 544). The heel catches 542 may extend toward a rear end 543 of the platform 538 with an extended portion 546. The heel catches 542 may extend from a first catch connector 544-1, toward the rear end 543, loop through the extended portion 546, and extend back toward the second catch connector 544-2.

In some embodiments, the extended portion 546 may be biased upward and away from the platform 538. In some embodiments, the extended portion 546 may be biased away from the platform 538 so that there is space underneath the extended portion 546 and the platform 538. For example, the extended portion 546 may be biased above the platform 538 so that there is gap between the extended portion 546 and the platform 538.

When a user inserts his or her foot into the toe strap 540, the user may insert his or her foot in a forward direction (e.g., from the rear end 543 toward the front end 541). When inserting the foot, the user may depress one or more of the heel catches 542 with his or her heel. For example, the user's heel may push downward on the extended portion 546 of one or more of the heel catches 542, thereby depressing one or more of the heel catches. This may cause the extended portion 546 of the one or more heel catches 542 to move toward the platform 538.

The plurality of heel catches 542 may be independently actuatable. For example, each heel catch 542 of the plurality of heel catches 542 may be connected to the platform 538 with an individual catch connector 544. Thus, each heel catch 542 may be depressed and/or released independently of the remaining heel catches 542. In some embodiments, at least one rearward heel catch 542 may remain undepressed (e.g., the at least one rearward heel catch 542 may remain in the neutral position). The at least one rearward heel catch 542 may be the first undepressed heel catch 542 between the user's heel and the rear end 543.

As the user pushes his or her foot toward the front end 541 and further into the toe strap 540, the user's heel may uncover (e.g., release) the extended portion 546 of one or more of the heel catches 542. Because the extended portion 546 is biased away from the platform 538, when the extended portion 546 is uncovered, the extended portion 546 may move away from the platform 538. The newly uncovered heel catch 542 may become the rearward heel catch 542. The user's heel may then be located between the toe strap 540 and the extended portion 546 of the rearward heel catch 542.

When the user has fully inserted his or her foot into the toe strap 540, the user's heel may be located between at least one of the extended portions 546 of the heel catches 542 and the toe strap 540. Because the extended portion 546 is extended above the platform 538, a portion of the extended portion 546 may be located a way up the user's heel. The extended portion 546 may contact the user's heel and prevent rearward movement of the foot (e.g., movement toward the rear end 543). In this manner, the heel catches 542 may help to retain the user's foot within the footrest 504. This may increase the user's stability during an exercise activity by preventing the user's foot from slipping during an exercise activity.

As may be seen, the extended portion 546 has a curved profile or shape. The curved profile or shape of the extended portion 546 may help to secure the user's foot from rearward motion (e.g., toward the rear end 543). In some embodiments, the curved profile or shape of the extended portion 546 may help to secure the user's foot from side-to-side motion (e.g., lateral motion relative to the front end 541 and the rear end 543). In combination with the user's toes being strapped into the toe strap 540, the user's foot may be securely connected to or fastened to the footrest 504 during an exercise activity. This may improve the user's stability during the exercise activity, thereby reducing the chance of injury caused by the user's foot slipping off the platform 538.

In some embodiments, the user may pull upward on the extended portion 546 of the heel catch 542 to engage with the heel of the user. This may allow the user to place the extended portion 546 on his or her heel in a comfortable position. For example, the user may place the extended portion 546 on his or her Achilles tendon, on the top of the heel bone, on the center of the heel bone, on the bottom of the heel bone, or at any other location on the user's heel. In this manner, the user may customize the comfort of the connection between the heel catch 542 and the user's foot.

As may be seen in FIG. 5-1, the footrest 504 includes multiple heel catches 542. For example, in the embodiment shown, there are seven heel catches 542. Including multiple heel catches 542 may allow multiple users having different sizes of feet to use the footrest 504. For example, a user with smaller sized feet may engage a heel catch 542 with his or her heel that is located closer to the front end 541 of the platform 538. A user with larger sized feet may engage a heel catch 542 with his or her heel that is located closer to the rear end 543 of the platform 538. Thus, by including multiple heel catches 542, the same footrest 504 may be used by multiple users having different sized feet. This may increase the versatility of the exercise device.

In some embodiments, the heel catches 542 may not have any adjustment mechanism. A length of the heel catches 542 may be fixed, and there may not be any strap, buckle, button, or other adjustment mechanism to change a length of the heel catches 542. The adjustability in usable foot size by footrest 504 may be based, at least in part, on the number of heel catches 542 arranged between the front end 541 and the rear end 543 of the platform 538.

In some embodiments, the heel catches 542 may be formed from a resilient material. For example, the heel catches 542 may be formed from an elastically deformable plastic, rubber, or other synthetic material. When securing the heel catches 542 to the user's foot, the heel catches 542 may deform to at least partially match the shape of the user's foot. Elastically deformable materials are typically softer and increase the comfort of the user. In some embodiments, the elastically deformable material of the heel catches 542 may apply a retention force to the user's foot. For example, the user's foot may be prevented from moving in the forward direction (e.g., toward the front end 541) by the toe strap 540. An elastically deformable heel catch 542 may push the user's foot up against the toe strap 540 to keep the foot snugly secured within the footrest 504.

In some embodiments, the elastically deformable material of the heel catch 542 may bias the extended portion 546 above the platform 538. The heel catch 542 may have a neutral shape in which the extended portion 546 is located above the platform 538. When the user's heel pushes down against the extended portion 546, the heel catch 542 may elastically deform and be pushed against the platform 538. When the user's heel is removed from the extended portion 546, the elastically deformable material may cause the heel catch 542 to return to the neutral position with the extended portion 546 being located above the platform 538.

The catch connectors 544 may form a hinge between the platform 538 and the extended portion 546. When the user depresses the extended portion 546 toward the platform 538, the heel catch 542 may rotate at the catch connectors 544. In some embodiments, the catch connectors 544 may be elastically deformable. When the user depresses the extended portion 546 toward the platform 538, the catch connectors 544 may elastically deform to allow the extended portion 546 to move. When the user's foot is removed from the extended portion 546, the catch connectors 544 may return to their neutral shape, which may move the extended portion 546 back to the neutral position.

In some embodiments, the catch connectors 544 may be formed from a mechanical hinge. For example, the catch connectors 544 may include a spring hinge. For example, the catch connectors may include a coil spring, a leaf spring, a torsion spring, a clock spring, any other type of spring, and combinations thereof. A spring hinge may have a longer operational lifetime, thereby reducing the chance of a heel catch 542 breaking at one or both of the catch connectors 544.

In some embodiments, the platform 538 may include one or more depressions 548. The depressions 548 may be positioned underneath the heel catch 542. The depressions 548 may be complementarily shaped (e.g., having the same shape and size) to the heel catch 542. When the user pushes down on the heel catch 542, the heel catch 542 may extend into the depression 548. When the heel catch 542 is pushed all the way to the platform 538, the heel catch 542 may be flush with surface of the platform 538. Because the user will likely have at least one of the heel catches 542 depressed during a user activity, pushing the heel catches 542 into the depressions 548 may help to improve the user's comfort by providing the user with a flat or approximately flat surface to push against while performing an exercise activity. This may improve the exercise experience.

FIG. 5-2 is a representation of a side-view of the footrest 504 of FIG. 5-1. As may be seen in the side-view, the toe strap 540 may extend above the platform 538 with a toe strap height 550. In some embodiments, the toe strap height 550 may be configured to allow the user's toes to be secured to the platform 538. In some embodiments, the toe strap height 550 may be configured to secure the user's foot to the platform 538 at the user's toes. In some embodiments, the toe strap height 550 may be configured to secure the user's foot to the platform 538 at the arch of the user's foot. In some embodiments, the toe strap height 550 may be 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, or any value therebetween. As discussed herein, the toe strap 540 may be adjustable, making the toe strap height 550 being adjustable.

The heel catches 542 have a gap between the platform 538 and the heel catch 542. The gap may extend a catch height 552. In some embodiments, the catch height 552 may be 0.5 cm, 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, or any value therebetween. The catch height 552 may be sized to allow the heel catch 542 to engage with the user's foot at his or her heel.

As may be seen in the top-down view of FIG. 5-3, the heel catches 542 have a catch length 554, which may be the length of the heel catch 542 between the catch connector 544 and the extended portion 546. In some embodiments, the catch length 554 may be 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, 12 cm, 14 cm, 16 cm, 18 cm, 20 cm, or any value therebetween. The catch length 554 may be sized to fit the average user's foot. In some embodiments, each heel catch 542 may have the same catch length 554. In some embodiments, different heel catches 542 may have different catch lengths 554. For example, heel catches 542 located closer to the toe strap 540 may have a shorter catch length 554 than heel catches 542 located further from the toe strap 540. This may help to expand the range of user foot size that may comfortably use the footrest 504.

FIG. 5-4 is a front view of the footrest 504 of FIG. 5-1. As may be seen, the toe strap 540 extends further above the platform 538 than the heel catches 542. When the user puts his or her foot in the footrest 504, the user may pull the heel catch 542 up to rest comfortably on his or her heel.

FIG. 6 is a flowchart of a method 660 for securing a user's foot to a rowing machine, according to at least one embodiment of the present disclosure. The method 660 includes inserting the toes of the user's foot underneath a toe strap that is connected to a platform of a footrest that is connected to the rowing machine at 662. The method 660 may include depressing one or more heel catches of a plurality of heel catches that are connected to the platform at 664. As discussed herein, the one or more heel catches may be depressed as, or at least partially as a result of, the user inserting his or her toes into the toe strap based on the size of the user's foot. In some embodiments, as the user slides his or her foot into place, one or more of the heel catches may be released (e.g., moved into the neutral position). The method 660 may further include securing the user's foot to the platform with a rearward heel catch at 666. The rearward heel catch may be oriented rearward of the at least one depressed heel catch. The rearward heel catch may be undepressed (e.g., the rearward heel catch may be in the neutral position). The rearward heel catch may contact the user's heel to secure the user's foot to the footrest during an exercise activity.

INDUSTRIAL APPLICABILITY

This disclosure generally relates to devices, systems, and methods for a rowing machine usable in a rowing, kayaking, canoeing, and other configurations. The rowing machine has a flywheel and two cables that each may independently apply a torque to the flywheel. The cables may be connected to a handle. The handle may include two portions. The two portions are connected to the two handles. The two portions may be connected to each other with a removable connection. When the two portions are connected, the rowing machine may be used in a rowing configuration. When the two portions are disconnected, each portion may pull on the flywheel independently. A spreader may be connected between the two portions to extend the length of the handle. In some embodiments, with the spreader in place, the user may be able to simulate a kayaking motion with the handle. In this manner, the rowing machine may be a convertible rowing machine that may be used in multiple configurations. This may increase the versatility of the rowing machine, thereby improving the user experience.

In some embodiments, the rowing machine may include a footrest against which the user may brace his or her feet during a rowing exercise. The footrest may include a platform. A toe strap may be located at a front end of the platform and a plurality of heel catches may be located at a rear end of the platform. During use, the user may insert his or her toes into the toe strap. The user's heel may depress one or more of the heel catches. As the user inserts his toes further into the toe strap, one or more of the depressed heel catches may move back away from the platform. This may move the heel catch above the user's heel. Contact between the user's heel and the heel catch may help to secure the user's foot to the footrest. This may provide the user with a more secure foot placement on the platform, thereby preventing the foot from moving during a rowing exercise.

In some embodiments, a rowing machine includes a sliding seat. During use, a user may sit on the sliding seat and place his or her feet on the footrests. The user may grab the handle which is connected to a cable. The user may pull on the handle. This may pull on the cable, which may, in turn, rotate a flywheel. The flywheel may provide resistance to rotation. As the user pulls on the handle, the user may push against the footrest with his or her feet. As the cable is extended, and while the user is pushing against the footrest with his or her feet, the sliding seat may slide backwards on a frame. The resistance to rotation of the flywheel may be transferred to the cable, causing a force to be applied to the cable to rotate the flywheel.

The cable may be biased to a retracted position, where the cable is pulled within the rowing machine. When the user has finished pulling on the handle (such as when the user's legs are extended, the sliding seat is slid back on the frame, and/or the user has pulled his or her arms toward his or her chest), the user may move closer to the flywheel, and the cable may be retracted. The motion may be repeated many times through a rowing exercise.

In some embodiments, a rowing machine includes a flywheel that is pulled by two cables. Each cable may independently rotate the flywheel. Put another way, the user may rotate the flywheel by pulling either the first cable or the second cable. The cables may be independent, meaning that a user may only pull on the first cable during an exercise activity without pulling on the second cable, or vice versa.

The first cable and the second cable may be connected to a handle. In some embodiments, the first cable may be connected to a first end of the handle and the second cable may be connected to a second end of the handle. During an exercise activity, the user may pull on the handle to perform the exercise activity. For example, a user may perform a rowing motion by pulling on the handle to extend the cables evenly (e.g., extend the first cable and the second cable at the same time and at the same rate). During a rowing activity, as discussed herein, the user may sit on the sliding seat and place his feet on the footrests. The user may pull on the handle with his or her hands to extend the cables, thereby rotating the flywheel. In some embodiments, the sliding seat may be connected to the frame with a sliding connection, and the user may push against the footrests with his or her legs to assist in pulling the handle.

In some embodiments, the handle may be a wide handle. For example, the handle may have a width that is wider than the user's shoulder blades. This may allow the user to exercise different muscles during a rowing exercise activity. For example, the user may place his or her hands a different width apart on the handle to exercise different muscles.

In some embodiments, the handle may be a modular handle or an adjustable handle. The handle may include a first portion and a second portion. The first cable may be connected to the first portion and the second cable may be connected to the second portion. The first portion and the second portion may be selectively couplable or connectable to each other. In some embodiments, the first portion may be directly coupled or connected to the second portion. In some embodiments, a handle accessory may be connected to one or both of the first portion or the second portion. In some embodiments, the handle accessory may be a spreader. The spreader may be placed between the first portion and the second portion to extend the width of the handle. This may allow the user to exercise different muscles by placing his or her hands at different locations on the handle.

In some embodiments, a spreader handle accessory may be used to spread the handle to simulate a kayak paddle. A kayak paddle may be wider than a rower handle to simulate the action of paddling a kayak. A kayak paddle used on the water includes a shaft that supports a blade on either end. To propel the kayak forward, the user may lower one end of the shaft and raise the other end of the shaft to place the blade in the water at a position in front of the user. The user may draw the blade toward him or herself and pull the blade out of the water. The user may then lower the second blade while raising the first blade to engage the second blade in the water and pull back on the second blade. This action is then repeated indefinitely.

The kayak paddling motion may be simulated using the handle. For example, the user may hold the handle and lower the first portion down while raising the second portion. The user may then pull back (e.g., away from the flywheel, toward the sliding seat) on the first portion. This motion may extend the first cable without extending the second cable, or while retracting the second cable. The user may then raise the first portion while lowering the second portion. The user may then pull back (e.g., away from the flywheel, toward the sliding seat) on the second portion. This motion may extend the second cable without extending the first cable, or while retracting the first cable. In this manner, the user may simulate the motion and/or forces experienced while paddling on a kayak using a kayak paddle.

While paddling, the user on a kayak may stay in the same position relative to the body of a kayak. Put another way, the seat of a kayak may be stationary, or not move. In some embodiments, in the kayaking configuration discussed herein, the sliding seat may include a locking mechanism, or a seat catch. The seat catch may lock the sliding seat in place such that the seat does not slide along the frame. Using a seat catch may help keep the user stable and further simulate the kayak paddling motion, thereby improving the user experience.

In some embodiments, the handle accessory may be a paddle shaft and grip, such as a canoe or dragon boat paddle shaft and grip, or other similar paddle shaft and grip. A canoe paddle has a single blade that extends into the water and a cross-bar at the top for the user to grab the handle. Only a single paddle extends into the water. To simulate the canoe paddling motion, the handle accessory may only be connected to the first portion. The user may grip the handle accessory vertically or approximately vertically and perform a canoe paddling motion with then handle by pushing the first portion downward and pulling the first portion backward. Because the handle may only be connected to the first cable, this motion may only extend the first cable. As may be understood, the accessory may similarly be connected to the second cable and the canoeing paddling motion simulated by extending the second cable. A modular or configurable handle that can be converted between the rowing configuration, the kayaking configuration, and the canoeing configuration may increase the number of exercises that may be performed on the rowing machine, thereby increasing its versatility. More available exercises may reduce the number of exercise devices a user may utilize to perform these exercises, thereby improving the user experience.

In some embodiments, a handle includes a first portion connected to a second portion at a handle connection. As discussed herein, the first portion and the second portion may be selectable connected at the handle connection. Thus, the first portion may be separated from the second portion and connected again, depending on the exercise being performed, a handle accessory to be integrated with the handle, any other connection reason, and combinations thereof.

The first portion includes a first handle. A first connection arm may be connected to the first handle. A cable may be connected to the first portion at the first connection arm. The second portion includes a second handle. A second connection arm may be connected to the second handle. A cable may be connected to the second portion at the second connection arm. While the connection arms are shown as being connected to the handle and extending out of the handle, it should be understood that the cables may be directly connected to the handle.

The first portion may be separated from the second portion at the handle connection. In some embodiments, the handle connection may be an interlocking connection, such as a dovetail connection. The first portion includes a protrusion having at least one overhanging portion. The second portion includes a recessed portion including at least one complementary overhanging portion. When the protrusion is inserted into the recessed portion, the protrusion and the recessed portion may interlock. Interlocking of the protrusion and the recessed portion may prevent separation of the first portion from the second portion. In some embodiments, the interlocking connection between the protrusion and the recessed portion may help to prevent longitudinal removal, or removal that is parallel to a longitudinal axis of the handles.

In the embodiment shown, the handle connection includes a pin and detent to prevent movement of the first portion relative to the second portion along the insertion axis of the protrusion into the recessed portion. For example, the protrusion may include a detent or a recessed portion. The recessed portion may include a pin. The pin may be configured to be inserted into the detent. In some embodiments, the pin may be biased outward with a spring or other resilient element. When the protrusion is inserted into the recessed portion, the protrusion may engage the pin. When the first portion is fully connected to the second portion, the pin may be inserted into the detent. The pin may resist being removed from the detent. This may help to strengthen the handle connection, thereby preventing separation of the first portion relative to the second portion.

In some embodiments, a handle may have a magnetic handle connection. The magnetic handle connection may include a protruding magnet on a first portion of the handle and a recessed magnet on a second portion of the handle. The protruding magnet and the recessed magnet may have a complementary shape. When connecting the first portion to the second portion, the protruding magnet may be magnetically connected to the recessed magnet. The magnetic connection may pull the first portion to the second portion and retain the two portions together.

In some embodiments, the magnetic handle connection may include one or more alignment features. The alignment features may help to align the first portion relative to the second portion. In some embodiments, the complementary shapes of the protruding magnet and the recessed magnet may be complementary. For example, the protruding magnet shown has an arcuate shape and the recessed magnet has a complementary arcuate shape with similar dimensions and shape. When the protruding magnet is inserted into the recessed magnet, the complementary shapes may orient and align the first portion with respect to the second portion. This may help to maintain an alignment of a first connection arm with respect to a second connection arm. Alignment between the first connection arm and the second connection arm, may help to maintain a constant pressure on the first portion and the second portion while pulling on the cables of the rowing machine.

In some embodiments, a footrest for a rowing machine includes a platform. A toe strap is connected to the platform at a front end of the platform. The footrest further includes a plurality of heel catches. In some embodiments, the plurality of heel catches may be arranged longitudinally along a length of the platform. For example, the heel catches shown are arranged in a line between a rear end of the platform and the toe strap. To use the footrest, the user may slide his or her foot, and more particularly his or her toes, into the toe strap. To insert his or her toes into the toe strap, the user may slide his or her toes between the platform and the toe strap. The toe strap may help to keep the user's foot, and particularly the user's toes, connected to the platform.

In some embodiments, the toe strap may be a one-size-fits-all toe strap. In some embodiments, the toe strap may be adjustable. For example, the toe strap may include a tightening mechanism, such as a latch, Velcro straps, buttons, cables, knobs, any other tightening mechanism, and combinations thereof. In some embodiments, the toe strap may be formed from an elastic material and may push against the user's foot. In some embodiments, the toe strap may be connected to an electric motor, and the electric motor may tighten the toe strap.

The heel catches may be secured to the platform and biased above the platform. The heel catches may be connected to the platform at a catch connector. The heel catches may extend toward a rear end of the platform with an extended portion. The heel catch may extend from a first catch connector, toward the rear end, loop through the extended portion, and extend back toward the second catch connector.

In some embodiments, the extended portion may be biased upward and away from the platform. In some embodiments, the extended portion may be biased away from the platform so that there is space underneath the extended portion and the platform. For example, the extended portion may be biased above the platform so that there is gap between the extended portion and the platform.

When a user inserts his or her foot into the toe strap, the user may insert his or her foot in a forward direction (e.g., from the rear end toward the front end). When inserting the foot, the user may depress one or more of the heel catches with his or her heel. For example, the user's heel may push downward on the extended portion of one or more of the heel catches, thereby depressing one or more of the heel catches. This may cause the extended portion of the one or more heel catches to move toward the platform.

The plurality of heel catches may be independently actuatable. For example, each heel catch of the plurality of heel catches may be connected to the platform with an individual catch connector. Thus, each heel catch may be depressed and/or released independently of the remaining heel catches. In some embodiments, at least one rearward heel catch may remain undepressed (e.g., the at least one rearward heel catch may remain in the neutral position). The at least one rearward heel catch may be the first undepressed heel catch between the user's heel and the rear end.

As the user pushes his or her foot toward the front end and further into the toe strap, the user's heel may move and uncover (e.g., release) the extended portion of one or more of the heel catches. Because the extended portion is biased away from the platform, when the extended portion is uncovered, the extended portion may move away from the platform. The newly uncovered heel catch may become the rearward heel catch. The user's heel may then be located between the toe strap and the extended portion of the rearward heel catch.

When the user has fully inserted his or her foot into the toe strap, the user's heel may be located between at least one of the extended portions of the heel catches and the toe strap. Because the extended portion is extended above the platform, a portion of the extended portion may be located a way up the user's heel. The extended portion may contact the user's heel and prevent rearward movement of the foot (e.g., movement toward the rear end). In this manner, the heel catches may help to retain the user's foot within the footrest. This may increase the user's stability during an exercise activity by preventing the user's foot from slipping during an exercise activity.

As may be seen, the extended portion has a curved profile or shape. The curved profile or shape of the extended portion may help to secure the user's foot from rearward motion (e.g., toward the rear end). In some embodiments, the curved profile or shape of the extended portion may help to secure the user's foot from side to side motion (e.g., lateral motion relative to the front end and the rear end). In combination with the user's toes being strapped into the toe strap, the user's foot may be securely connected to or fastened to the footrest during an exercise activity. This may improve the user's stability during the exercise activity, thereby reducing the chance of injury caused by the user's foot slipping off the platform.

In some embodiments, the user may pull upward on the extended portion of the heel catch to engage with the heel of the user. This may allow the user to place the extended portion on his or her heel in a comfortable position. For example, the user may place the extended portion on his or her Achilles tendon, on the top of the heel bone, on the center of the heel bone, on the bottom of the heel bone, or at any other location on the user's heel. In this manner, the user may customize the comfort of the connection between the heel catch and the user's foot.

In some embodiments, the footrest includes multiple heel catches. For example, the footrest may include seven heel catches. Including multiple heel catches may allow multiple users having different sizes of feet to use the footrest. For example, a user with smaller sized feet may engage a heel catch with his or her heel that is located closer to the front end of the platform. A user with larger sized feet may engage a heel catch with his or her heel that is located closer to the rear end of the platform. Thus, by including multiple heel catches, the same footrest may be used by multiple users having different sized feet. This may increase the versatility of the exercise device.

In some embodiments, the heel catches may not have any adjustment mechanism. A length of the heel catches may be fixed, and there may not be any strap, buckle, button, or other adjustment mechanism to change a length of the heel catches. The adjustability in usable foot size by footrest may be based, at least in part, on the number of heel catches arranged between the front end and the rear end of the platform.

In some embodiments, the heel catches may be formed from a resilient material. For example, the heel catches may be formed from an elastically deformable plastic, rubber, or other synthetic material. When securing the heel catches to the user's foot, the heel catches may deform to at least partially match the shape of the user's foot. Elastically deformable materials are typically softer and increase the comfort of the user. In some embodiments, the elastically deformable material of the heel catches may apply a retention force to the user's foot. For example, the user's foot may be prevented from moving in the forward direction (e.g., toward the front end) by the toe strap. An elastically deformable heel catch may push the user's foot up against the toe strap to keep the foot snugly secured within the footrest.

In some embodiments, the elastically deformable material of the heel catch may bias the extended portion above the platform. The heel catch may have a neutral shape in which the extended portion is located above the platform. When the user's heel pushes down against the extended portion, the heel catch may elastically deform and be pushed against the platform. When the user's heel is removed from the extended portion, the elastically deformable material may cause the heel catch to return to the neutral position with the extended portion being located above the platform.

The catch connectors may form a hinge between the platform and the extended portion. When the user depresses the extended portion toward the platform, the heel catch may rotate at the catch connectors. In some embodiments, the catch connectors may be elastically deformable. When the user depresses the extended portion toward the platform, the catch connectors may elastically deform to allow the extended portion to move. When the user's foot is removed from the extended portion, the catch connectors may return to their neutral shape, which may move the extended portion back to the neutral position.

In some embodiments, the catch connectors may be formed from a mechanical hinge. For example, the catch connectors may include a spring hinge. For example, the catch connectors may include a coil spring, a leaf spring, a torsion spring, a clock spring, any other type of spring, and combinations thereof. A spring hinge may have a longer operational lifetime, thereby reducing the chance of a heel catch breaking at one or both of the catch connectors.

In some embodiments, the platform may include one or more depressions. The depressions may be positioned underneath the heel catch. The depressions may be complementarily shaped (e.g., having the same shape and size) to the heel catch. When the user pushes down on the heel catch, the heel catch may extend into the depression. When the heel catch is pushed all the way to the platform, the heel catch may be flush with surface of the platform. Because the user will likely have at least one of the heel catches depressed during a user activity, pushing the heel catches into the depressions may help to improve the user's comfort by providing the user with a flat or approximately flat surface to push against while performing an exercise activity. This may improve the exercise experience.

In some embodiments, the toe strap may extend above the platform with a toe strap height. In some embodiments, the toe strap height may be configured to allow the user's toes to be secured to the platform. In some embodiments, the toe strap height may be configured to secure the user's foot to the platform at the user's toes. In some embodiments, the toe strap height may be configured to secure the user's foot to the platform at the arch of the user's foot. In some embodiments, the toe strap height may be 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, or any value therebetween. As discussed herein, the toe strap may be adjustable, making the toe strap height being adjustable.

The heel catches have a gap between the platform and the heel catch. The gap may extend a catch height. In some embodiments, the catch height may be 0.5 cm, 1 cm, 1.5 cm, 2 cm, 2.5 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, or any value therebetween. The catch height may be sized to allow the heel catch to engage with the user's foot at his or her heel.

In some embodiments, the heel catches have a catch length, which may be the length of the heel catch between the catch connector and the extended portion. In some embodiments, the catch length may be 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, 12 cm, 14 cm, 16 cm, 18 cm, 20 cm, or any value therebetween. The catch length may be sized to fit the average user's foot. In some embodiments, each heel catch may have the same catch length. In some embodiments, different heel catches may have different catch lengths. For example, heel catches located closer to the toe strap may have a shorter catch length than heel catches located further from the toe strap. This may help to expand the range of user foot size that may comfortably use the footrest.

In some embodiments, the toe strap extends further above the platform than the heel catches. When the user puts his or her foot in the footrest, the user may pull the heel catch up to rest comfortably on his or her heel.

In some embodiments, a method securing a user's foot to a rowing machine may include inserting the toes of the user's foot underneath a toe strap that is connected to a platform of a footrest that is connected to the rowing machine. The method may include depressing one or more heel catches of a plurality of heel catches that are connected to the platform. As discussed herein, the one or more heel catches may be depressed as, or at least partially as a result of, the user inserting his or her toes into the toe strap based on the size of the user's foot. In some embodiments, as the user slides his or her foot into place, one or more of the heel catches may be released (e.g., moved into the neutral position). The method may further include securing the user's foot to the platform with a rearward heel catch. The rearward heel catch may be oriented rearward of the at least one depressed heel catch. The rearward heel catch may be undepressed (e.g., the rearward heel catch may be in the neutral position). The rearward heel catch may contact the user's heel to secure the user's foot to the footrest during an exercise activity.

Following are sections in accordance with the present disclosure:

A1. A rowing machine, comprising:

a sliding seat;

a flywheel;

a first cable connected to the flywheel;

a second cable connected to the flywheel;

a handle connected to the first cable and the second cable, wherein the handle includes:

-   -   a first portion connected to the first cable; and     -   a second portion connected to the second cable, wherein the         first portion is selectively couplable to the second portion         with a handle connection.         A2. The rowing machine of section A1, wherein the handle         connection is a dovetail connection.         A3. The rowing machine of section A1 or A2, wherein the handle         connection includes a detent and pin, the pin being inserted         into the detent to retain the first portion and the second         portion in a connected position.         A4. The rowing machine of any of sections A1-A3, wherein the         handle connection includes a spreader configured to connect to         the first portion and the second portion to extend a width of         the handle.         A5. The rowing machine of any of sections A1-A4, wherein the         sliding seat includes a seat catch to fix the seat to the rowing         machine.         B1. A rowing machine, comprising:

a sliding seat;

a flywheel;

a cable connected to the flywheel; and

a footrest, wherein the footrest includes:

-   -   a platform;     -   a toe strap connected to the platform; and     -   a plurality of heel catches, wherein the plurality of heel         catches are connected to the platform with a catch connection         that biases each heel catch of the plurality of heel catches         away from the platform.         B2. The rowing machine of section B1, wherein the plurality of         heel catches are arranged longitudinally along the platform.         B3. The rowing machine of section B1 or B2, wherein an extended         portion of each heel catch is biased away from the platform.         B4. The rowing machine of any of sections B1-B3, wherein the         plurality of heel catches are formed from an elastically         deformable material.         B5. The rowing machine of any of sections B1-B4, wherein the         catch connection includes a spring hinge.         B6. The rowing machine of any of sections B1-B5, wherein the         plurality of heel catches includes seven heel catches.         B7. The rowing machine of any of sections B1-B6, wherein the         plurality of heel catches are independently actuatable.         B8. The rowing machine of any of sections B1-B7, wherein the toe         strap is adjustable.         B9. The rowing machine of any of sections B1-B8, wherein the         platform includes one or depressions positioned underneath the         plurality of heel catches.         B10. The rowing machine of section B9, wherein the one or more         depressions are complementarily shaped to the plurality of heel         catches.         C1. A method for securing a user's foot to a rowing machine,         comprising:

inserting toes of said user's foot underneath a toe strap connected to a platform of a footrest;

depressing one or more heel catches of a plurality of heel catches connected to the platform; and

securing said foot to the platform with a rearward heel catch oriented rearward of the one or more depressed heel catches.

C2. The method of section C1, wherein depressing the one or more heel catches includes depressing the one or more heel catches at least partially as a result of inserting said toes underneath the foot strap. C3. The method of section C2, further comprising releasing at least one of the one or more depressed heel catches as said toes are inserted into the foot strap. C4. The method of any of sections C1-C3, wherein securing said user's foot to the platform includes pulling an extended portion of the rearward heel catch to engage with a heel of said user's foot. C5. The method of any of sections C1-C4, wherein the plurality of heel catches are secured to the platform with a catch connector that biases the plurality of heel catches above the platform.

One or more specific embodiments of the present disclosure are described herein. These described embodiments are examples of the presently disclosed techniques. Additionally, in an effort to provide a concise description of these embodiments, not all features of an actual embodiment may be described in the specification. It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous embodiment-specific decisions will be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one embodiment to another. Moreover, it should be appreciated that such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

The articles “a,” “an,” and “the” are intended to mean that there are one or more of the elements in the preceding descriptions. The terms “comprising,” “including,” and “having” are intended to be inclusive and mean that there may be additional elements other than the listed elements. Additionally, it should be understood that references to “one embodiment” or “an embodiment” of the present disclosure are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. For example, any element described in relation to an embodiment herein may be combinable with any element of any other embodiment described herein. Numbers, percentages, ratios, or other values stated herein are intended to include that value, and also other values that are “about” or “approximately” the stated value, as would be appreciated by one of ordinary skill in the art encompassed by embodiments of the present disclosure. A stated value should therefore be interpreted broadly enough to encompass values that are at least close enough to the stated value to perform a desired function or achieve a desired result. The stated values include at least the variation to be expected in a suitable manufacturing or production process, and may include values that are within 5%, within 1%, within 0.1%, or within 0.01% of a stated value.

A person having ordinary skill in the art should realize in view of the present disclosure that equivalent constructions do not depart from the spirit and scope of the present disclosure, and that various changes, substitutions, and alterations may be made to embodiments disclosed herein without departing from the spirit and scope of the present disclosure. Equivalent constructions, including functional “means-plus-function” clauses are intended to cover the structures described herein as performing the recited function, including both structural equivalents that operate in the same manner, and equivalent structures that provide the same function. It is the express intention of the applicant not to invoke means-plus-function or other functional claiming for any claim except for those in which the words ‘means for’ appear together with an associated function. Each addition, deletion, and modification to the embodiments that falls within the meaning and scope of the claims is to be embraced by the claims.

The terms “approximately,” “about,” and “substantially” as used herein represent an amount close to the stated amount that still performs a desired function or achieves a desired result. For example, the terms “approximately,” “about,” and “substantially” may refer to an amount that is within less than 5% of, within less than 1% of, within less than 0.1% of, and within less than 0.01% of a stated amount. Further, it should be understood that any directions or reference frames in the preceding description are merely relative directions or movements. For example, any references to “up” and “down” or “above” or “below” are merely descriptive of the relative position or movement of the related elements.

The present disclosure may be embodied in other specific forms without departing from its spirit or characteristics. The described embodiments are to be considered as illustrative and not restrictive. The scope of the disclosure is, therefore, indicated by the appended claims rather than by the foregoing description. Changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope. 

What is claimed is:
 1. A rowing machine, comprising: a sliding seat; a flywheel; a first cable connected to the flywheel; a second cable connected to the flywheel; a handle connected to the first cable and the second cable, wherein the handle includes: a first portion connected to the first cable; and a second portion connected to the second cable, wherein the first portion is selectively couplable to the second portion with a handle connection.
 2. The rowing machine of claim 1, wherein the handle connection is a dovetail connection.
 3. The rowing machine of claim 1, wherein the handle connection includes a detent and pin, the pin being inserted into the detent to retain the first portion and the second portion in a connected position.
 4. The rowing machine of claim 1, wherein the handle connection includes a spreader configured to connect to the first portion and the second portion to extend a width of the handle.
 5. The rowing machine of claim 1, wherein the sliding seat includes a seat catch to fix the seat to the rowing machine.
 6. A rowing machine, comprising: a sliding seat; a flywheel; a cable connected to the flywheel; and a footrest, wherein the footrest includes: a platform; a toe strap connected to the platform; and a plurality of heel catches, wherein the plurality of heel catches are connected to the platform with a catch connection that biases each heel catch of the plurality of heel catches away from the platform.
 7. The rowing machine of claim 6, wherein the plurality of heel catches are arranged longitudinally along the platform.
 8. The rowing machine of claim 6, wherein an extended portion of each heel catch is biased away from the platform.
 9. The rowing machine of claim 6, wherein the plurality of heel catches are formed from an elastically deformable material.
 10. The rowing machine of claim 6, wherein the catch connection includes a spring hinge.
 11. The rowing machine of claim 6, wherein the plurality of heel catches includes seven heel catches.
 12. The rowing machine of claim 6, wherein the plurality of heel catches are independently actuatable.
 13. The rowing machine of claim 6, wherein the toe strap is adjustable.
 14. The rowing machine of claim 6, wherein the platform includes one or more depressions positioned underneath the plurality of heel catches.
 15. The rowing machine of claim 14, wherein the one or more depressions are complementarily shaped to the plurality of heel catches.
 16. A method for securing a user's foot to a rowing machine, comprising: inserting toes of said user's foot underneath a toe strap connected to a platform of a footrest; depressing one or more heel catches of a plurality of heel catches connected to the platform; and securing said foot to the platform with a rearward heel catch oriented rearward of the one or more depressed heel catches.
 17. The method of claim 16, wherein depressing the one or more heel catches includes depressing the one or more heel catches at least partially as a result of inserting said toes underneath the foot strap.
 18. The method of claim 17, further comprising releasing at least one of the one or more depressed heel catches as said toes are inserted into the foot strap.
 19. The method of claim 16, wherein securing said user's foot to the platform includes pulling an extended portion of the rearward heel catch to engage with a heel of said user's foot.
 20. The method of claim 16, wherein the plurality of heel catches are secured to the platform with a catch connector that biases the plurality of heel catches above the platform. 